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Genome-Wide Characterization and Expression Profiling of the AUXIN RESPONSE FACTOR (ARF) Gene Family in Eucalyptus grandis

Yu, Hong and Soler, Marçal and Mila, Isabelle and San Clemente, Hélène and Savelli, Bruno and Dunand, Christophe and Paiva, Jorge A. P. and Myburg, Alexander A. and Bouzayen, Mondher and Grima-Pettenati, Jacqueline and Cassan-Wang, Hua Genome-Wide Characterization and Expression Profiling of the AUXIN RESPONSE FACTOR (ARF) Gene Family in Eucalyptus grandis. (2014) PLoS ONE, 9 (9). ISSN 1932-6203

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Official URL: http://dx.doi.org/10.1371/journal.pone.0108906


Auxin is a central hormone involved in a wide range of developmental processes including the specification of vascular stem cells. Auxin Response Factors (ARF) are important actors of the auxin signalling pathway, regulating the transcription of auxin-responsive genes through direct binding to their promoters. The recent availability of the Eucalyptus grandis genome sequence allowed us to examine the characteristics and evolutionary history of this gene family in a woody plant of high economic importance. With 17 members, the E. grandis ARF gene family is slightly contracted, as compared to those of most angiosperms studied hitherto, lacking traces of duplication events. In silico analysis of alternative transcripts and gene truncation suggested that these two mechanisms were preeminent in shaping the functional diversity of the ARF family in Eucalyptus. Comparative phylogenetic analyses with genomes of other taxonomic lineages revealed the presence of a new ARF clade found preferentially in woody and/or perennial plants. High-throughput expression profiling among different organs and tissues and in response to environmental cues highlighted genes expressed in vascular cambium and/or developing xylem, responding dynamically to various environmental stimuli. Finally, this study allowed identification of three ARF candidates potentially involved in the auxin-regulated transcriptional program underlying wood formation.

Item Type:Article
Additional Information:Thanks to PLoS editor. The original PDF of the article can be found at PLoS One website : http://www.plosone.org/
HAL Id:hal-01142165
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Instituto de Biologia Experimental e Tecnológica - iBET (PORTUGAL)
Other partners > Instituto de Investigação Científica Tropical - IICT (PORTUGAL)
Other partners > University of Pretoria (SOUTH AFRICA)
Laboratory name:
Deposited On:14 Apr 2015 14:31

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